Luca (10) is a young Greek immigrant, living in Cargèse, on the Corsican coast. The boy finds solace in training and obsessing over freediving, an ancient sport that involves diving with one breath. But his father, Alex (39), ex-champion, tormented by the life he gave up and the recent disappearance at sea of his wife while diving, forbids Luca from pursuing his art, following his risky behavior. Unable to find his place in the village and in conflict with his father, Luca is at his wits end. The boy is willing to risk everything to prove he’s got what it takes… and pull off the ultimate dive.